Symfony2使用第三方库Upload制作图片上传

 
namespace ZM\AdminBundle\Controller;
 
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\Filesystem\Filesystem;
 
class DefaultController extends Controller {
 
    public function indexAction($name) {
        return $this->render('ZMAdminBundle:Default:index.html.twig', array('name' => $name));
    }
 
    /**
     * 上传图片
     *
     * @param type $user_id 用户的id，用作文件名
     * @param type $str     表单中file类型的input的name
     * @param type $path    保存路径
     * @return type
     */
    public function uploadPic($user_id, $str, $path) {
 
        $fs = new Filesystem();
 
        //检查路径是否存在
        if (!$fs->exists($path)) {
            //如果不存在，创建目录
            $fs->mkdir($path, 0700);
        }
 
        //使用Upload库
        $storage = new \Upload\Storage\FileSystem($path);
        $file = new \Upload\File($str, $storage);
 
        //如果文件名为空
        if ($file->getName() != '') {
            //设置文件名为用户的id
            $file->setName($user_id);
 
            //验证文件上传
            $file->addValidations(array(
                //指定文件类型
                new \Upload\Validation\Mimetype(array('image/png', 'image/jpg', 'image/jpeg', 'image/gif')),
                //指定文件大小
                new \Upload\Validation\Size('2M')
            ));
 
            //上传文件
            try {
                //成功
                $file->upload();
                //文件名和扩展名
                $file_name = $file->getNameWithExtension();
            } catch (\Exception $e) {
                //失败!
                $errors = $file->getErrors();
            }
        }
 
        //返回文件名和扩展名
        return $file_name;
    }
 
}

 
namespace ZM\ApiBundle\Controller;
//引用写好的上传图片方法uploadPic的Controller，并命名为BaseController
use ZM\AdminBundle\Controller\DefaultController AS BaseController;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
//继承BaseController
class ContactController extends BaseController {
 
    /**
     * 用户上传头像
     *
     * @return Response
     */
    public function uploadHeadAction() {
 
        $request = Request::createFromGlobals()->request;
        $user_id = $request->get('user_id');
 
        //判断是否有文件上传
        if (isset($_FILES['head']) && $_FILES['head'] != '') {
 
            $conn = $this->getDoctrine()->getConnection();
            $data = $conn->fetchAssoc("SELECT id, head FROM contact WHERE id = ? LIMIT 1", array($user_id));
 
            //判断用户是否存在
            if(!empty($data['id'])) {
 
                //设置图片保存路径
                $path = 'image/head/';
                //获取上传文件后返回的文件名和扩展名
                $file_name = $this->uploadPic($user_id, 'head', $path);
                //修改用户contact表head头像字段的值
                $conn->executeUpdate("UPDATE contact SET head = ? WHERE id = ?", array($path . $file_name, $user_id));
                $result['flag'] = 1;
                $result['content'] = '上传头像成功！';
            } else {
                $result['flag'] = 3;
                $result['content'] = '用户不存在！';
            }
        }else{
            $result['flag'] = 2;
            $result['content'] = '上传失败，没有选择图片！';
        }
 
        return new Response(json_encode($result), '200', array('Content-Type' => 'application/json'));
    }
}